Megan Fox's audition for Transformers-Emma Stone's audition for Easy A-Natalie Portman's audition for Leon - The Professional

It only takes one special role to launch a career on the A-list. Landing that role though, that's the hard part. If you want to be somebody in Hollywood, you have to nail your audition. These stars did just that, and their lives haven't been the same since.

Megan Fox's audition for Transformers Emma Stone's audition for Easy A Natalie Portman's audition for Leon / The Professional